For price history
https://en.institut-seltene-erden.de/seltene-erden-und-metalle/strategische-metalle-2/antimon/.
Recent prices
https://www.argusmedia.com/metals-platform/price/assessment/antimony-ingot-min-99-65-fob-china-PA00143670000
On Australian reserves and production. https://minerals.org.au/sites/default/files/Antimony_0.pdf.
For more detail read the section on antimony page 28-32 https://minerals.org.au/sites/default/files/Antimony_0.pdf.